摘要:

The US Environmental Protection Agency (USEPA) recently finalized two regulations that will dramatically increase the need for water systems to know and test the corrosivity of their water. These regulations are the Lead and Copper Rule and Phase II Rule (asbestos monitoring). Treating for corrosion can be a time‐consuming process. However, if your system uses the Langelier Index (LI) to calculate corrosion, this article will explain how to dramatically reduce the time it takes for the LI test by using a computer spreadsheet.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1992.tb00278.x

出版商:Wiley    

年代:1992

数据来源: WILEY

摘要:

The Association of Boards of Certification (ABC), with a US Environmental Protection Agency Office of Drinking Water grant, is developing a computerized version of the Very Small Water System operator certification exam. The goal is to develop a computerized system for administering operator certification exams. Operators would take the test using their personal computer; this would save operators the trouble and expense of traveling to a central location to take the test.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1992.tb00279.x

出版商:Wiley    

年代:1992

数据来源: WILEY

摘要:

The article describes what computers are and what they can be used for in easy to understand terms. Uses for the computer include billing, record keeping, tracking expenses, tracking information on wells, valves, and other hardware, and word processing. Tips on selecting and buying a computer and software, and care of the computer are also given.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1992.tb00283.x

出版商:Wiley    

年代:1992

数据来源: WILEY

摘要:

Old plastic squeezable containers or spray bottles can be ideal for storing small amounts of certain fluids that need to be carried into small or confined spaces to work on machines.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1992.tb00280.x

出版商:Wiley    

年代:1992

数据来源: WILEY

摘要:

When buried service boxes must be replaced, the pipe on which they are housed is frequently damaged or rusted and must be rethreaded to allow for the installation of a new service box or coupling and extension. Service box threaders normally require a large hole be made around the service box connection so that the threader handle can be turned horizontally. This design for a service box threader, however, allows for use with only 3 in. (75 mm) of soil removed around the top of the pipe. this is especially significant when service boxes are in older subdivisions, sometimes buried below the grade under a driveway. The threader helps keep damage to such expensive‐to‐repair areas to a minimum.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1992.tb00282.x

出版商:Wiley    

年代:1992

数据来源: WILEY